Steel Classification Question

[Fort Henry Custom Knives]

Hey Guys, I have a question on Steel Classification and thought this would be the best place to post it.

If a Production Company (who is having their blades Laser cut) states they are using " 14-4 Chrome Moly steel " .. just what kind of steel is that? (Or could it be several different kinds)?

I read somewhere that 154CM is the common name for the steel that is 15% Chrome and 4% Moly, could it be a form of this?

Thanks in advance for the info.

 

[mete]

They should really identify the steel. Of course 14 Cr identifies it as a stainless steel and three knife steels could fit the 14 Cr-4 Mo ;154cm,ATS-34 and BG-42. See the steel composition table at www.agrussell.com

 

[Dan Gray]

Vince I'm finding a big range
like in L6 one could be air quenched
and another oil , just a change in the molly could make a world of difference.

 

[mete]

Molly ? isn't that the hot new secretary ? It's moly ,short for molybdenum. ......Steel composition is often given as the nominal but always has a range - I made a list for Dan's website www.knivesby.com

 

[Dan Gray]

Molly ? isn't that the hot new secretary ? It's moly ,short for molybdenum. ......Steel composition is often given as the nominal but always has a range - I made a list for Dan's website www.knivesby.com

oh you mean in steel,, that type of molybdenum ..
no one ever said I could spell Robert to be exact, it's here
http://www.knivesby.com/composition-for-common-knife-steels.html

2 types Kevin listed
one has Molybdenum and the other does not and it's still called 6L

Crucible (champalloy)

Typical Chemistry
Carbon 0.75%
Manganese 0.70%
Silicon 0.25%
Chromium 0.80%
Nickel 1.50%
Molybdenum 0.30%

Carpenter (RDS)

Carbon .70%
Manganese .35%
Silicon .25%
Chromium 1.0%
Nickel 1.75%

 

[mete]

That's because while all steels have a composition range , some tool steels also have optional elements .That's why whenusing things like L6 always get it from the same mill.